Modal Analysis of Three Rotating Blades of Large Wind Turbine

Guo Yu Hu; Wen Lei Sun; An Wu; Yan Xu

doi:10.4028/www.scientific.net/AMM.157-158.697

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 157-158Modal Analysis of Three Rotating Blades of Large...

Modal Analysis of Three Rotating Blades of Large Wind Turbine

Abstract:

Abstract: Based on the Multi-body dynamics, the dynamics equation of the flexible blade in wind turbine is established by discretizing the rotating blade using finite element method. The simulation analysis of the single blade and the vibration modes of a 5MW wind turbine rotor are carried out by MATLAB. The first six natural frequencies and modes of the single blade and the rotor are figured out, and whose results are analyzed. The simulation results indicates that the coupling effect of the rotor can lead to dynamic stiffening. In comparison to the results in FAST, these simulation results show an outstanding agreement with the results calculated by FAST and hence approve the simulation method is valid and meanwhile give reference for large wind turbine design and running.

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Periodical:

Applied Mechanics and Materials (Volumes 157-158)

Pages:

697-701

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.157-158.697

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Online since:

February 2012

Authors:

Guo Yu Hu, Wen Lei Sun, An Wu, Yan Xu

Keywords:

Dynamic Stiffening, Modal Analysis, Multibody Dynamics (MBD), Natural Frequency

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